tiff: pull in pdfium patches via Gentoo

BUG=chromium:703757
TEST=precq passes

Change-Id: Ie9d582e42d9abc4f2a59016983f305711924c2f3
Reviewed-on: https://chromium-review.googlesource.com/475630
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
9 files changed